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/root/src/subsynth/syn/Module/SplitterModule.cpp

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/****************** <SYN heading BEGIN do not edit this line> *****************
 *
 * subsynth - modular audio synthesizer
 * subsynth is (C) Copyright 2001-2002 by Kevin Meinert
 *
 * Original Author: Kevin Meinert
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 * -----------------------------------------------------------------
 * File:          $RCSfile: SplitterModule.cpp,v $
 * Date modified: $Date: 2002/02/16 19:24:16 $
 * Version:       $Revision: 1.12 $
 * -----------------------------------------------------------------
 *
 ****************** <SYN heading END do not edit this line> ******************/
#include "syn/Module/SplitterModule.h"

namespace syn
{
   SplitterModule::SplitterModule() : Module(), mPutCount( 0 ), mIsOpen( false )
   {
      mTerminal = this->createInput( "input" );
      this->createOutput( "output1" );
      this->createOutput( "output2" );
   }

   bool SplitterModule::open()
   {
      mIsOpen = true;
      return mIsOpen;
   }
   
   void SplitterModule::close()
   {
      mIsOpen = false;
   }
   
   bool SplitterModule::isOutputHigh()
   {
      std::map<std::string, TerminalPtr>::iterator output_itr;
      for (output_itr = this->outputs().begin(); output_itr != this->outputs().end(); ++output_itr)
      {
         TerminalPtr output_term = (*output_itr).second;
         if (output_term->high())
            return true;
      }
      return false;
   }   
   
   void SplitterModule::setDoneState( bool state )
   {
      std::map<std::string, TerminalPtr>::iterator output_itr;
      for (output_itr = this->outputs().begin(); output_itr != this->outputs().end(); ++output_itr)
      {
         TerminalPtr output_term = (*output_itr).second;
         output_term->setDone( state );
      }
   }   
   
   void SplitterModule::update()
   {
      //std::cout<<"SplitterModule::update()\n"<<std::flush;

      // if input queue is empty, or one of the outputs can't 
      // recieve any more, then nothing to do, return...
      if (mTerminal->empty() || isOutputHigh()) 
      {
         this->setDoneState( mTerminal->done() );
         return;
      }
      
      SampleBuffer1f* read_buf = mTerminal->front();
      mPutCount = read_buf->size();
      
      // for each output term, blit the input data to it
      std::map<std::string, TerminalPtr>::iterator output_itr;
      for (output_itr = this->outputs().begin(); output_itr != this->outputs().end(); ++output_itr)
      {
         TerminalPtr output_term = (*output_itr).second;
         SampleBuffer1f* write_buf = NULL;
         SampleBufferRepos::instance()->take( write_buf );

         // transfer the data to the output terminal
         (*write_buf) = (*read_buf);
         output_term->push( write_buf );
      }
      
      SampleBufferRepos::instance()->putback( read_buf );
      mTerminal->pop();

      // always propogate the done state to the appropriate outputs 
      this->setDoneState( mTerminal->done() );
   }

}// end of namespace

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